Mass Effect 1 Textures I don't have any experience with this one yet, so I can't comment on the quality. UPDATE- It should have an installer for the textures so you don't have to use TexMod.

If your system can handle it and you have more then 512mb of VRAM I would definitley reccomend using these mods along with the SweetFX mods. I was able to use ALL of them and it easily maxed out my VRAM(3-6gb) and actual RAM for the game(~2gb)